Atomizing pump spray

Dispensing – Processes of dispensing

Patent

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Details

2223217, 2223219, 239338, B65D 8854, G01F 1106

Patent

active

06126038&

ABSTRACT:
The invention relates to a manual, self-priming precompression spray pump, which employs a minimal number of different parts. The assembly includes a container for the liquid, a cap, a conventional spray nozzle unit, a valve member, a piston, a spring and a cylinder for housing the piston and providing a compression chamber. The valve upper end functions as an outlet valve and the valve lower end functions as an inlet valve. The spring is a compound spring and serves to force the valve outlet end into a constant sealing engagement with the interior of the piston, and to resist the compression movement of the piston. The cylinder for housing the piston includes an inner, concentric valve cylinder. The inner cylindrical wall has an axial length which terminates short of the chevron valve when said valve member and said piston are fully biased away from said inlet valve, whereby said chevron valve is in a position outside of said inner cylindrical wall. Thus, at this extreme position, the inlet valve is fully open for cooperation with said piston cylinder inlet end to restrict liquid flow from out of said piston compression chamber and through said piston cylinder inlet end.

REFERENCES:
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patent: 3399836 (1968-09-01), Pechstein
patent: 3861564 (1975-01-01), Loeffler
patent: 4025046 (1977-05-01), Boris
patent: 4271990 (1981-06-01), Kutik et al.
patent: 4389003 (1983-06-01), Meshberg
patent: 4606479 (1986-08-01), Van Brocklin
patent: 5025958 (1991-06-01), Montaner et al.
patent: 5073165 (1991-12-01), Edwards
patent: 5626264 (1997-05-01), Florez et al.
patent: 5697530 (1997-12-01), Montaner et al.

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